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A single-factor field experiment was conducted in 2009-2011 on light soil to determine productivity of multi-species mixtures of barley, oat, wheat and triticale. The cereals were grown in 3- and 4-species mixtures. The objective of this study was to determine if these highly diverse cereal mixtures are more productive and yield more stable than pure stand cereals. Mixtures did not differ in grain...
In a field experiment conducted in 2009-2011 on light soil barley, oat, wheat and triticale were grown in 3- and 4-species mixtures and in pure stands. The aim of the study was to assess competition between species in mixtures and to determine yield advantage of mixtures over their components grown in pure stands. Competitive hierarchy observed at full maturity of cereals in 4-species mixture clearly...
The study aimed at being a mycological evaluation of spring barley grain harvested from the barley-pea intercrop, on which different methods of weed control had been used. The field experiment was carried out during 2010-12 and it was conducted using randomized block design in four replicates. Weed control was mechanical (spring-tine harrow treatment of variable intensity) and chemical (herbicide...
Atmospheric air may contain a variety of biological components, e.g. microorganisms, which may be harmful to the internal environment of caves and the health of its visitors. Our study aimed at mycological evaluation of the air inside and outside of Niedźwiedzia Cave in Poland. Between 123 and 214 CFU fungi per 1m³ of air were isolated from the air sampled in the cave, and ca. 600 CFU from the air...
W jednoczynnikowym doświadczeniu polowym przeprowadzonym w latach 2009-2011 uprawiano jęczmień, owies, pszenicę i pszenżyto oraz trójskładnikowe mieszanki tych zbóż, a także mieszan¬kę zawierającą wszystkie gatunki. Zróżnicowanie gatunkowe zasiewów miało niewielki wpływ na zachwaszczenie wtórne łanów. Nie stwierdzono istotnych różnic w liczbie i masie chwastów w dwóch pierwszych latach doświadczenia...
The aim of this study was to identify and quantify lignin transported from the River Vistula to the accumulation area in the Gdansk Basin. Sediment samples collected along the Vistula mouth - Gdansk Deep transect were analysed for lignin. Lignin was characterised by oxidative degradation, cupric oxide being chosen as the most suitable oxidising agent. The polar functional groups of the oxidation products...
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